问题
填空题
估算:1504-698的结果是______,估算496+305的结果是______.
答案
①1504-698≈1500-700=800
②496+305≈500+300=800
故答案为:800,800.
估算:1504-698的结果是______,估算496+305的结果是______.
①1504-698≈1500-700=800
②496+305≈500+300=800
故答案为:800,800.